Asp.Net Mvc File Download Example' title='Asp.Net Mvc File Download Example' />This document describes the release of ASP. NET MVC 3 RTM for Visual Studio 2010. ASP. NET MVC is a framework for developing Web applications that uses the ModelView. UploadFile/2b481f/Asp-Net-mvc-application-using-backbone-js/Images/Select%20MVC4%20application.jpg' alt='Asp.Net Mvc File Download Example' title='Asp.Net Mvc File Download Example' />Ajax Uploader is an easy to use, hiperformance ASP. NET File Upload Control which allows you to upload multiple files to web. Ive had it suggested to me that I should use FileResult to allow users to download files from my Asp. Net MVC application. But the only examples of this I can find. This project gives you access to the code for upcoming releases that the ASP. NET team is working on, starting with the ASP. NET MVC Framework. Next Previous Create First ASP. NET MVC Application In this section, we will create a new MVC 5 application with Visual Studio 2013 for Web and understand the. Here we see a method to download a file in ASP. NET. File upload download service with ASP. NET Web API and Windows Phone background file transfer Microsoft All In One Code Framework. Last week we discussed RESTful services, as well as how to create a REST service using WCF Web API. Marriage Porutham In Tamil Software. Using of jQuery Ajax file uploading in the ASP. NET MVC application. April 2011 Tools Update ASP. NET MVC 3 is a framework for building scalable, standardsbased web applications using wellestablished design pattern. Ajax Uploader is an easy to use, hiperformance ASP. NET MVC File Upload Control which allows you to upload multiple files to web. Id like to remind you whats really important is the concepts, not how to implement the services using a particular technology. Shortly after that, WCF Web API was renamed to ASP. NET Web API, and formally entered beta. In this post, well discuss how to upgrade from WCF Web API to ASP. NET Web API. Well create a file uploadingdownloading service. Before that, Id like to give you some background about the motivation of this post. The current released version of Story Creator allows you to encode pictures to videos. But the videos are mute. Windows Phone allows users to record sound using microphone, as do many existing PCs thus future Windows 8 devices. So in the next version, wed like to introduce some sound. That will make the application even cooler, right The sound recorded by Windows Phone microphone only contains raw PCM data. This is not very useful other than using XNA to play the sound. So I wrote a prototype a Windows Phone program to encode it to wav. Then I expanded the prototype with a REST service that allows the phone to upload the wav file to a server, where ultimately it will be encoded to mp. Media Foundation. With the release of ASP. NET Web API beta, I think Ill change the original plan write about OAuth this week, to continue the discussion of RESTful services. Youll also see how to use Windows Phones background file transfer to upload files to your own REST services. However, due to time and effort limitations, this post will not cover how to use microphone and how to create wav files on Windows Phone although youll find it if you download the prototyp, or how to use Media Foundation to encode audiovideos not included in the prototype yet, perhaps in the future. You can download the prototype here. Once again, note this is just a prototype, not a sample. Use it as a reference only. The service. Review What is REST service. First lets recall what it means by a RESTful service. This concept is independent from which technology you use, be it WCF Web API, ASP. NET Web API, Java, or anything else. The most important things to remember are REST is resource centric while SOAP is operation centric. REST uses HTTP protocol. You define how clients interact with resources using HTTP requests such as URI and HTTP method. In most cases, upgrade from WCF Web API to ASP. NET Web API is simple. Those two do not only share the same underlying concepts REST, but also share a lot of code base. You can think ASP. NET Web API as a new version of WCF Web API, although it does introduce some break changes, and has more to do with ASP. NET MVC. You can find a lot of resources here. Today Ill specifically discuss one topic How to build a file uploaddownload service. This is somewhat different from the tutorials youll find on the above web site, and actually I encountered some difficulties when creating the prototype. Using ASP. NET Web APIThe first thing to do when using ASP. NET Web API is to download ASP. NET MVC 4 beta, which includes the new Web API. Of course you can also get it from Nu. Get. To create a project that uses the new Web API, you can simply use Visual Studios project template. This template is ideal for those who want to use Web API together with ASP. NET MVC. It will create views and Java. Script files in addition to files necessary for a service. If you dont want to use MVC, you can remove the unused files, or create an empty ASP. NET application and manually create the service. This is the approach well take today. If youve followed last weeks post to create a REST service using WCF Web API, you need to make a few modifications. First remove any old Web API related assembly references. You have to add references to the new version System. Web. Http. dll, System. Web. Http. Common, System. Web. Http. Web. Host, and System. Net. Http. dll. Note many Microsoft. System. As for System. Net. Http. dll, make sure you reference the new version, even if the name remains the same. Once again, make sure you set Copy Local to true, if you plan to deploy the service to Windows Azure or somewhere else. Like assmblies, many namespaces have been changed from Microsoft. System. If youre not sure, simply remove all namespaces, and let Visual Studio automatically find which ones you need. The next step is to modify Global. Before, the code looks like this, where Service. Route is used to define base URI using ASP. NET URL Routing. This allows you to remove the. Other parts of URI are defined in Uri. Template. routes. Addnew Service. Route files, new Http. Service. Host. Factory, typeofFile. Upload. Service In ASP. NET Web API, URL Routing is used to define the complete URI, thus removes the need to use a separate Uri. Template. public static void Register. RoutesRoute. Collection routes                    routes. Map. Http. Route                name Default. Api,                route. Template controllerfilename,                defaults new  filename  Route. Parameter. Optional                     The above code defines how a request is routed. If a request is sent to http server namefilesmyfile. Web API will try to find a class named Files. Controller controller is mapped to this class, and its case insensitive. Then it will invoke a method which contains a parameter filename, and map myfile. This parameter is optional. So you must have a class Files. Controller. You cannot use names like File. Upload. Service. This is because now Web API relies on some of ASP. NET MVCs features although you can still host the service in your own process without ASP. NET. However, this class does not have to be put under the Controllers folder. Youre free to put it anywhere, such as under a services folder to make it more like a service instead of a controller. Anyway, this class must inherite Api. Controller in WCF Web API, you didnt need to inherite anything. For a REST service, HTTP method is as important as URI. In ASP. NET Web API, you no longer use Web. GetInvoke. Instead, you use Http. GetAccept. Verbs. Theyre almost identical to the counter parts in old Web API. One improvement is if your service method begins with GetPutPostDelete, you can omit those attributes completely. Web API will automatically invoke those methods based on the HTTP method. For example, when a POST request is made, the following method will automatically be invoked public Http. Response. Message PostFrom. Uristring filenameYou may also notice the From. Uri attribute. This one is tricky. If you omit it, youll encounter exceptions like No Media. Type. Formatter is available to read an object of type String with the media type undefined. This has to do with ASP. NET MVCs model binding. By default, the last parameter in the method for a POSTPUT request is considered to be request body, and will deserialized to a model object. Since we dont have a model here, an exception is thrown. From. Uri tells MVC this parameter is actually part of URI, so it wont try to deserialize it to a model object. This attribute is optional for requests that do not have request bodies, such as GET. This one proved to be a trap for me, and web searches do not yield any useful results. How to download a file in ASP. Net. Here is perhaps the simplest, shortest way to download a file in an ASP. Net application Response. Content. Type applicationpdf Response. Append. HeaderContent Disposition. My. File. pdf Response. Transmit. FileServer. Map. PathFilesMy. File. pdf Response. End The first step is to set the content type. In the example above, were downloading a. Here are some of the most common content types. Response. Content. Type textHTML. Response. Content. Type textplain. Response. Content. Amd Atombios Driver Download more. Type Applicationmsword. Response. Content. Type Applicationx msexcel. Response. Content. Type imagejpeg. Response. How To Install Flex And Bison On Windows. Content. Type  imageGIF. Response. Content. Type applicationpdf Response. Transmit. File retrieves a file and writes it to the Response. By calling Transmit. File, you are ensuring that the Open Save dialong will open on the browser, as opposed to simply opening the file in the browser window. In some cases, we cant call Transmit. File because we cant map a path to the file. Instead, well get the file as a Stream and write it to the Response object Response. Content. Type applicationpdf Response. Append. HeaderContent Disposition. My. File. pdf Write the file to the Responseconstint buffer. Length 1. 00. 00 byte buffer new. Bytebuffer. Length int length 0 Stream download null try    download new. File. StreamServer. Map. PathFilesLincoln. File. Mode. Open,                                                   File. Access. Read    do            if Response. Is. Client. Connected                    length download. Readbuffer, 0, buffer. Length            Response. Output. Stream. Writebuffer, 0, length            buffer new. Bytebuffer. Length                else                    length 1                while length 0    Response. Flush    Response. End finally    if download null        download. Close As before, the Open Save dialog should open in the browser. The project download includes working examples of both of these techniques.